Cultivator.



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J. HARPER.

GULTIVATOR.

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' I. HARPER.

i GULTIVATOR. APPLIOATION FILED AUG. 9. 190e.

Patented June 2'?, 1911.

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3mm/tofs Enne/S Ham/0e?" attopnmjo JAMES HARPER, OF OZARK, MISSOURI.

CULTIVATOR.

Specification of Letters Patent.

Patntea June '27, 1911.

Application filed August 9, 1909. Serial No. 511,948.

To all whom it may concern:

Be it known that I, JAMES HARPER, a citi- Zen of the United States,residing at Ozark, in the county of Christian and State of Missouri,have invented certain new and useful Improvements in Cultivators; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to cultivators and it consists in theconstruction and arrangement of parts, as will be hereinafter describedand particularly pointed out in the claim.

In the drawings, Figure 1 is a side elevation of the cultivator; Fig. 2is atop plan View; Fig. 3 is a central longitudinal sectional view; Fig.4 is a detail vertical transverse sectional view on the line 4-4 of Fig.1; Fig. 5 is a detail vertical transversesectional view on the line 5-5of Fig. 1; Fig. G is a detail elevation, partly in section, of one ofthe plow standards.

Referring more especially to the drawings, 1 represents the axle of thevehicle upon which are mounted the usual supporting wheels 2. In thisinstance, the axle is bent forwardly in a horizontal direction, as at 3,and then inwardly at right angles to the bend 3, as at 4, to provide anextension parallel with the portion upon which the wheels are mounted,so as to accommodate the brace rods 5 which are connected to the tongue6. From the extension 4, the axle is bowed, as at 7, so as to connectwith the rear end of the tongue, as at 8, and to provide supportingstandards for the adjusting arms 9. Sleeved on the axle l, between eachwheel and the lateral bends 3, is a bearing member 10, which hasconnected to it the depending' adjusting arm 11 provided with apertures12 adapted to receive the hooked end 13 of the operating spring 14. Thisoperating' spring is bridged between the arm 11 and the arm 9 and thelatter arm s notched, as shown at 15, to permit of its proper connectiontherewith, with respect to its connection with the arm 11. The arms 9are held upon the standards by suitable set screws 16 so that they maybe vertically adjusted thereon to increase or decrease the tension ofthe springs 14, whereby the force exerted to raise or lower the plowsmay be increased or decreased. i

From the illustration, it will be seen that the springs 14 may beconnected to either the forward or the rear ends of the arms 11. Vhen inthe lirst mentioned position, the plow beams 17 are raised by thesprings and when in the latter position are depressed by the springs sothat the plow points are thrown into engagement with the ground.

Each sleeved bearing is provided with a vertical bearing 18 which haslateral arms 19 extending therefrom alongside of the sleeved bearing.The vertical bearings 18 are placed between the upper and lower legs ofthe bifurcated end 20 of the beams 17 and are held in such position bythe bearing bolts or pins 21. The rear ends of the beams are alsobifurcated, as at 22, to form straddle legs 23 which engage on oppositesides of the standard supports 24 and are pivotally connected to saidsupports by the bolts or pins 25. This permits the supports to swinglaterally upon the beams and the sleeved bearings 10 to also swinglaterally relative to the beams. In order to secure a parallel motion,the arms 19 are apertured at 26 to receive the parallel connecting rods27 which extend on either side of the beams 17 and are connected to theapertured adjusting bolts 28 which extend through the supports 24 andare adjustable by means of the nuts 28a so as to take up any slack inthe rods 27.

An inspection of the top plan view, will show that any movement of therear end of t-he beams 17 will cause the front ends to pivot on thebearings 18 and the supports to pivot upon the rear ends of the beamsand maintain their parallel relation with the line of draft. To eachbeam.there is secured a suitable handle 29 by which the operator maythrow the sup-ports and the plows attached thereto to the requiredposition for dodging the plants.

Secured to each support 24 is a plow standard 30 which has at its upperforward end a rectangular adjusting frame 31 with apertures 32 in itsvertical side members adapted to be engaged by the adjusting screws 33which pass through the frame and take into the supports 24. Thestandards are bent down, as is usual, and have pivoted to their lowerends the slotted plow feet 34 which are adapted to be normally held inoperative position by mechanism which will now be described.

Pivoted at 25 to the upper portion of the standards are two dependinglink arms 35 which have pivoted to their lower ends at 26 similar linkarms 36 which in turn are pivoted at 37', to the adjusting block 37which is notched on its inner side, as at 38, to engage similarserrations 39 on the underside of the plow feet"34. These adjustingblocks have bolts 40 passing through them and through slots in the feetso that they may be held in their proper adjusted position with the linkarms 36 engaged with their said pivots on opposite sides of each foot.The link arms 35 and 3G are separated at their connecting points by atubular sleeve 41 and form in substance a toggle lever which when underordinary tension, as will hereinafter be described, is substantiallystraight. In order to adjust the aotion of these toggle levers and tohold them in normal position, I provide a depending bracket 42 whichforms a stop and guide way for a spiral spring 43 wound on a guiding rod44 which latter is pivotally connected at one end between the links 35upon a bolt 45. This spring 43 normally exerts its pressureto straightenout the toggle lever and in order to prevent too much of an inwardmovement and to adjust the same whereby the foot may be operated with agreater or less pressure exerted thereon, I rovide an eccentric 46provided with a plurality oted between the links 35 by a bolt 48 and isadapted to rotate and bring its low or high faces into engagement withthe Standard 30. In order to hold the eccentric in adjusted position, Iform holes 49 in the links 35 to register with the apertures 47 in theeccentric and pass through the holes and apertures a cotter pin orsuitable locking device which extends from link to link.

It will be seen from the foregoing description and illustration of thedrawings, that the plows are maintained in parallelism with the line ofdraft at all times no of holes 47. This eccentric is pivmatter whattheir lateral adjustment may be. lVith this feature, the dirt is thrownon both sides of the plows evenly, where bull` tongue and middle-bursterpoints are used. Where turning plows with mold-board and land-side, areused, the dirt is thrown evenly at all times and lateral adjustment doesnot cause any diagonal positioning of the landside which would tend tosheer the plows inwardly toward one another.

From the foregoing description, taken in connection with theaccompanying'draw-- ings, the construction and operation of theinvention will be readily understood without requiring a more extendedexplanation.

Having thus described my invention, what I claim is A cultivatorcomprising a running gear with an aXle bent in horizontal and verticalportions, the horizontal portions having bearings sleeved thereonprovided with depending apertured adjusting arms, each sleeve bearingbeing provided with a vertical bearing having lateral arms projectingtherefrom and arranged adjacent to the sides of said sleeve bearings,beams having bifurcated front ends having the vertical bearings pivotedthereto, adjustable horizontal arms on the vertical portions of theaxlehaving a plurality of notches therein, springs having hooks onopposite ends so as to adjustably engage said notches and said aperturedarms of the bearing sleeves, and the rear ends of said beams being alsobifurcated and having standard supports pivotally connected thereto.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JAMES HARPER.

Witnesses THOMAS C. GRAIN, D. W. BINGHAM.

Copies of this patent may be obtained for ive cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

